<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/logo.png" alt="" />
        <span>诗酒趁年华</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 主体区域 -->
    <el-container>
      <!-- 左侧导航栏 -->
      <el-aside :width="isCollapse ? '64px':'200px'">

        <div class="toggle-button" @click="toggleCollapse">|||</div>

        <el-menu background-color="#333744" text-color="#fff" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">

          <!-- 一级菜单 -->
          <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">

            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path+''" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>

          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧容器主体 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data(){
    return{
      //左侧菜单数据
      menuList:'',
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao',
      },
      //是否折叠菜单栏
      isCollapse:false,
      //被激活的地址
      activePath:''
    }
  },
  created(){
    this.getMenuList();
    this.activePath=window.sessionStorage.getItem('activePath')
    
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    async getMenuList(){
      const {data:res} = await this.$http.get('menus')
      if(res.meta.status!=200) return this.$message.error(res.meta.msg)
      this.menuList=res.data
      
    },
    //点击按钮实现菜单折叠
    toggleCollapse(){
      this.isCollapse=!this.isCollapse
    },
    //保存连接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }
  },
};
</script>

<style lang="less" scoped>
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0px;
  align-items: center;
  div {
    display: flex;
    align-items: center;
  }
  div img {
    width: 50px;
    height: 50px;
    margin: 5px;
    border-radius: 5px;
  }
  div span {
    font-size: larger;
    font-weight: 900;
    color: white;
    margin-left: 10px;
  }
}
.el-aside {
  background-color: #333744;
  transition: 0.5s;
}
.el-main {
  background-color: #eaeaea;
}
.home-container {
  width: 100%;
  height: 100%;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
.el-menu{
  border-right: none;
}
</style>